The latest HERU blog post looks at our recently published research on the cost-effectiveness of treatments for severe obesity in adults. The research is part of the NIHR funded REBALANCE (REview of Behaviour And Lifestyle interventions for severe obesity) study. We conducted an economic evaluation of different weight management programmes, bariatric surgery or not helping. We found that bariatric surgery was the most expensive but also the most effective treatment. However, our research acknowledges that not everyone with severe obesity will want to undergo surgery and that a low intensity weight management programme also offers value for money.